Neotriadomerus longiovipositor Huber, 2017

Huber, John T., 2017, Eustochomorpha Girault, Neotriadomerus gen. n., and Proarescon gen. n. (Hymenoptera, Mymaridae), early extant lineages in evolution of the family, Journal of Hymenoptera Research 57, pp. 1-87 : 21-25

Neotriadomerus longiovipositor Huber sp. n.

Figs 108-111 , 112-115 , 116-118 , 119, 120 , 121, 122 , 123, 124 , 125

Type material.

Holotype female (ANIC) on slide (Fig. 111 ) labelled: 1. "15.17S 145.10E 5Km WbyN Rounded Hill nr Hope Vale Mission Q 7 Oct. 1980 J.C. Cardale ex ethanol". 2. " Neotriadomerus longiovipositor Huber Holotype ♀ dorsal".

Paratypes. 4 females, 4 males, 1 deformed male (gynandromorph?). AUSTRALIA. Queensland: Batavia Downs, 12.40°S; 142.39°E, 22.vi-23.viii.1992, P. Zborowski & J. Cardale, flight interception trap (1♂, ANIC); NW of Chillagoe near historical mine site, 17°08'40"S; 144°30'16"E, 30.iii.1992, E.C. Dahms & G. Sarnes (1♂, QMBA); 18.5 km W. Gordonvale, 13.xi.1979, E.C. Dahms, J.B. Woolley & J. LaSalle, open forest (1♀, QDPC); Heathlands, 11.45°S; 142.35°E, 15-26.i.1992, I. Naumann, T. Weir, at light (1♀, ANIC); Millstream Falls National Park, 17.41°S; 145.26°E, 24-25.v.1980, I.D. Naumann, J.C. Cardale (1 deformed ♂, ANIC); 5 km W. by N. Rounded Hill near Hope Vale Mission, 15.17°S, 145.10°E; 7-10.v.1981, I.D. Naumann (1♀, ANIC); 15.16°S; 144.59°E 14 km W. by N. Hope Vale Mission. 8-18.x.1980, J.C. Cardale, collected at light (1♂, ANIC); Ross River resevoir, 10 km S. Townsville, 19° 27'S; 146° 44'E, 27.xi.1991, C.J. Burwell (1♂, QMBA); near Swamp Mitchell Plateau airfield, 14.47°S; 125.49°E, 18.v.1983, I.D. Naumann, J.C. Cardale (1♀, ANIC).

Diagnosis.

Neotriadomerus longiovipositor differs from the other small (body length less than 2600) species of Neotriadomerus , as follows: fore wing with cubital line extending proximally to about level of other microtrichia (Fig. 113 ); ovipositor extending anteriorly under mesosoma at least to level of head (Figs 114 , 115 ); funicle segments with mps in two widely overlapping whorls (Fig. 112 ). Male flagellomeres with mps in two scarcely overlapping whorls (Fig. 121 ).

Description.

Female. Body length ≈ 1700-2250 (n=6). Colour. Body (before slide mounting one specimen) uniformly shiny black except mouthparts brown; antenna dark brown but scape and pedicel ventrally slightly lighter; pro- and mesocoxa dark brown except extreme apices yellowish, metacoxa dorsally almost black; the rest of each leg yellowish except for femur ventrally of fore- and mid leg, entire femur except extremities of hind leg, and apical tarsomere of all legs brown. Head. Head width 344-412 (Figs 108 , 110 ). Antenna. Fl1 slightly shorter than fl2, with 8 (9?) mps; fl2 slightly the longest funicle segment, with 9-12 mps; fl3-fl8 with 9-12 (13?) mps; clava with 22 mps, 8 on first, 6 on second and 8 on third segment (Fig. 112 ). Antennal measurements (n=4), length/width (ratio of flagellar segments): scape 174-194/47-65 (2.99-3.78), pedicel 57-66/40-46 (1.30-1.67), fl1 85-104/44-57 (1.83-1.95), fl2 88-108/45-52 (1.88-2.19), fl3 80-109/43-52 (1.72-2.11), fl4 72-84/44-47 (1.65-1.97), fl5 70-102/42-47 (1.66-2.19), fl6 68-97/43-50 (1.56-1.94), fl7 65-96/41-44 (1.54-2.17), fl8 63-64/42-46 (1.41-1.49); entire clava 126-128/49/53 (2.43-2.59), with segments 1-3 length [measured along dorsal margin] 40-46, 29-31, and 50-60 (the paratype from 18.5 km W. Gordonvale was the largest specimen but had fl8 and clava missing from both antennae so the maximum lengths in the ranges given above for those segments are smaller than they should be). Mesosoma. Mesosoma length 617-678, width 317-327 (n=3, slide mounts), height ≈ 280 (critical point dried paratype). Wings. Fore wing length (n=3) 1118-1208, width 407-432, length/width 2.71-2.80, longest marginal setae ≈ 54-62; cubital line extending to just proximal to base of parastigma (Fig. 113 ). Hind wing length ≈ 914-1052, width 120-136, longest marginal setae ≈ 50-67. Legs. Protibia with 5 or 6 (on specimen with only 2 on one leg) short, thick pegs along its length and a transverse row of 3 or 4 abutting pegs apically (as in Fig. 53 ). Metasoma. Metasoma height in lateral view ≈ 480 (including slightly lowered hypopygium, critical point dried paratype) or 320-400 (three slide mounted paratypes). Gaster length 918-1453, about 1.49-2.12 × as long as mesosoma; gt1-gt7 lengths about 204-244, 190-236, 136-266, 130-207, 114-209, 218-320, ≈ 24-59 [measurement of a tergum excludes the telescoped portion inside another (more anterior) tergum]; hypopygium extending posteriorly to about apex of gt3 to halfway between anterior and posterior margin of gt4. Ovipositor length 1445-2238, ≈ 3.58-4.82 × metatibia length (≈ 380-472) and extending anteriorly to level of head or beyond (Figs 114 , 115 ) and not extending posteriorly beyond apex of gaster (Figs 114 , 115 ), except in one paratype (Figs 117 , 118 ).

Male. Colour. As for female. Head. Head (Figs 119 , 120 ) width 380-436 (n=4). Antenna. Measurements, length/width (n=3): scape 170-214/56-67, pedicel 57-68/46-52, flagellar segments: fl1 117-122/55-63, fl2 109-134/52-58, fl3 103-136/50-62, fl4 105-130/47-56, fl5 102-125/48-55, fl6 98-127/50, fl7 96-120/48-52, fl8 89-120/44-53, fl9 84-112/45-48, fl10 76-104/42-48, fl11 90-118/36-43; total flagellar length 1068-1349; fl6 length/width ratio 1.98-2.54, with about 17-19 mps in two slightly overlapping whorls (Fig. 121 ). Mesosoma. Mesosoma length 780-860, about 0.80-1.22 × as long as metasoma length (680-1020); propodeum with 2 propodeal setae, rarely 3 on one side. Wings. Fore wing (Fig. 122 ) length (n=3) 1191-1320, width 446 -495, length/width, 2.56-2.67, longest marginal setae 58-68; cubital line extending to about level of other microtrichia. Hind wing length 921-1024, width 132-158, longest marginal setae 52-65. Metasoma. Petiole length 35-36, width 70-76 (n=2). Gaster length 780-860; gt1-gt5 each with a row of about 5 lateral and dorsal setae on each side (apparently without dorsal setae on gt1), and gt6 with about 6 long dorsal setae on each side and about 20 short lateral setae (Fig. 123 ). Genitalia (Fig. 124 , 125 ) with paramere in lateral view higher than wide and blunt apically, with 2 short apicoventral setae close together and 2 or 3 short subapical setae more widely spaced.

Etymology.

The name is a noun in apposition, referring to the long ovipositor (the second longest in the genus) that extends anteriorly to the head.

Figures

Figure 125. Neotriadomerus longiovipositor, male paratype (near historical mine site, NW of Chillagoe). Gaster, median plane showing genitalia. Scale bar = 300 μm.

Figures 108 - 111. Neotriadomerus longiovipositor, holotype. 108 head, anterior 109 mouthparts and tentorium 110 head, posterior 111 holotype slide. Scale bar = 200 μm.

Figures 112 - 115. Neotriadomerus longiovipositor, holotype. 112 antenna 113 wings 114 mesosoma + metasoma, dorsal (inset shows fenestra of scutellum) 115 mesosoma + metasoma, ventral as seen dorsally through body. Scale bar = 500 μm.

Figures 116 - 118. Neotriadomerus longiovipositor, female paratypes. 116 head + anterior of mesosoma, dorsal (near Swamp Mitchell Plateau Airfield) 116 metasoma, lateral (18.5 km W. Gordonvale) 117 metasoma, median plane 118 metasoma, lateral. Scale bar for 116 = 200 μm; 117, 118 = 1000 μm.

Figures 119, 120. Neotriadomerus longiovipositor, male paratype (14 km W. by N. Hope Vale Mission). 119 head, anterior (inset shows ocular apophysis or apodeme) 120 head, posterior. Scale bar = 200 μm.

Figures 121, 122. Neotriadomerus longiovipositor. 121 male antenna, paratype (14 km W. by N. Hope Vale Mission) 122 wings. Scale bar = 500 μm.

Figures 123, 124. Neotriadomerus longiovipositor, male paratype (14 km W. by N. Hope Vale Mission). 123 mesosoma, legs + metasoma, lateral 124 genitalia, lateral. Scale bar for 123 = 1000 μm; 124 = 200 μm.

Figures 50 - 55. Neotriadomerus spp. 50 N. darlingi male parastigma, dorsal 51 N. longissimus female parastigma, ventral 52 N. darlingi male stigmal vein, dorsal 53 N. longissimus female calcar, lateral 54 N. sp. female calcar, dorsolateral 55 N. sp. female pretarsus, dorsolateral. Scale bar for 50, 53, 54 = 50 μm; 51 = 100 μm; 52, 55 = 20 μm.